CARACTERISTIQUES EPIDEMIOLOGIQUES ET HISTOPATHOLOGIQUES DES TUMEURS RENALES PRIMAIRES A KINSHASA: A PROPOS DE 42 CAS.

Objectives: To assess the epidemiological and histopathological profile of renal tumors in three medical units in Kinshasa. Material and methods We performed a retrospective and descriptive cross-sectional study including 42 cases of renal tumors diagnosed in Kinshasa University Hospital, the National Institute of Biomedical Research (INRB) and the Lomo Medical Center between 1990 and 2012. Results: Our study showed that kidney tumors accounted for 0.5% of all tumors while cancers were the most common with 83.3% (35/42 cases). Nephroblastoma (45.2%) was the most common and followed by renal cell carcinoma (38.1%). The median age of onset of nephroblastoma was 3.5 years (7 months - 15 years), while it was 53 years (33-69 years) for clear cell carcinoma. Angiomyolipoma and papillary carcinoma were predominantly female whereas nephroblastoma, clear cell carcinoma, and Oncocytoma was predominantly male. The distribution of renal cell carcinoma by Fürhman nuclear grade showed a predominance of grade 3 (37.5%). Conclusions: Renal tumors accounted for 0.5% of all tumors with nephroblastoma at the top with 3.5 years (7 months to 15 years) as median age. We noted a female predominance for angiomyolipoma and papillary carcinoma, whereas nephroblastoma, clear cell carcinoma, and oncocytoma were predominantly male. [ABSTRACT FROM AUTHOR]